The Options Clearing Corporation (OCC)

Symbology Initiative Public Web Site Report Changes

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Volume Data

Trade Date: March 15, 2010

DAILY TOTALS		AVERAGES
OCC Contracts:	12,191,782	Mar MTD Options:	14,941,342
Options Total:	12,093,652	Mar MTD Futures:	93,954
Futures Total:	98,130	2010 YTD Options:	15,068,378
		2010 YTD Futures:	102,297

Infomemos
Press & News
Documents

03/15/2010 — #27072
CBOE S&P 500 Index - Symbol Conversion

03/15/2010 — #27071
Owens & Minor, Inc. - 3 For 2 Stock Split

03/12/2010 — #27070
WebMD Health Corp. - Partial Self Tender Offer

03/12/2010 — #27069
Iowa Telecommunications Services, Inc. - Anticipated Adjustment

03/12/2010 — #27068
The Black & Decker Corporation - Contract Adjustment

03/11/2010
OCC Board Of Directors Welcomes New Member

03/02/2010
OCC Announces Clearing Refund For 2009

03/02/2010
OCC Announces Total Contract Volume In February Grew 3%

02/26/2010
BATS Exchange Join The Options Clearing Corporation

02/17/2010
OCC Announces Successful Symbology Conversion

2009 Annual Report

5/8/2009
LEAPS® Conversions

Characteristics and Risks of Standardized Options

December 2009 ODD Definitive Supplement

S&P's 2009 'AAA' Credit Rating (PDF)

This web site discusses exchange-traded options issued by The Options Clearing Corporation. No statement in this web site is to be construed as a recommendation to purchase or sell a security, or to provide investment advice. Options involve risk and are not suitable for all investors. Prior to buying or selling an option, a person must receive a copy of Characteristics and Risks of Standardized Options. Copies of this document may be obtained from your broker, from any exchange on which options are traded or by contacting The Options Clearing Corporation, One North Wacker Dr., Suite 500, Chicago, IL 60606 (1-888-678-4667).